security/security.c

   1 /*
   2  * Security plug functions
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
   7  * Copyright (C) 2016 Mellanox Technologies
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  */
  14
  15 #include <linux/capability.h>
  16 #include <linux/dcache.h>
  17 #include <linux/module.h>
  18 #include <linux/init.h>
  19 #include <linux/kernel.h>
  20 #include <linux/lsm_hooks.h>
  21 #include <linux/integrity.h>
  22 #include <linux/ima.h>
  23 #include <linux/evm.h>
  24 #include <linux/fsnotify.h>
  25 #include <linux/mman.h>
  26 #include <linux/mount.h>
  27 #include <linux/personality.h>
  28 #include <linux/backing-dev.h>
  29 #include <linux/string.h>
  30 #include <net/flow.h>
  31
  32 #define MAX_LSM_EVM_XATTR       2
  33
  34 /* Maximum number of letters for an LSM name string */
  35 #define SECURITY_NAME_MAX       10
  36
  37 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
  38 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
  39
  40 char *lsm_names;
  41 /* Boot-time LSM user choice */
  42 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  43         CONFIG_DEFAULT_SECURITY;
  44
  45 static void __init do_security_initcalls(void)
  46 {
  47         initcall_t *call;
  48         call = __security_initcall_start;
  49         while (call < __security_initcall_end) {
  50                 (*call) ();
  51                 call++;
  52         }
  53 }
  54
  55 /**
  56  * security_init - initializes the security framework
  57  *
  58  * This should be called early in the kernel initialization sequence.
  59  */
  60 int __init security_init(void)
  61 {
  62         int i;
  63         struct list_head *list = (struct list_head *) &security_hook_heads;
  64
  65         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
  66              i++)
  67                 INIT_LIST_HEAD(&list[i]);
  68         pr_info("Security Framework initialized\n");
  69
  70         /*
  71          * Load minor LSMs, with the capability module always first.
  72          */
  73         capability_add_hooks();
  74         yama_add_hooks();
  75         loadpin_add_hooks();
  76
  77         /*
  78          * Load all the remaining security modules.
  79          */
  80         do_security_initcalls();
  81
  82         return 0;
  83 }
  84
  85 /* Save user chosen LSM */
  86 static int __init choose_lsm(char *str)
  87 {
  88         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  89         return 1;
  90 }
  91 __setup("security=", choose_lsm);
  92
  93 static bool match_last_lsm(const char *list, const char *lsm)
  94 {
  95         const char *last;
  96
  97         if (WARN_ON(!list || !lsm))
  98                 return false;
  99         last = strrchr(list, ',');
 100         if (last)
 101                 /* Pass the comma, strcmp() will check for '\0' */
 102                 last++;
 103         else
 104                 last = list;
 105         return !strcmp(last, lsm);
 106 }
 107
 108 static int lsm_append(char *new, char **result)
 109 {
 110         char *cp;
 111
 112         if (*result == NULL) {
 113                 *result = kstrdup(new, GFP_KERNEL);
 114                 if (*result == NULL)
 115                         return -ENOMEM;
 116         } else {
 117                 /* Check if it is the last registered name */
 118                 if (match_last_lsm(*result, new))
 119                         return 0;
 120                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
 121                 if (cp == NULL)
 122                         return -ENOMEM;
 123                 kfree(*result);
 124                 *result = cp;
 125         }
 126         return 0;
 127 }
 128
 129 /**
 130  * security_module_enable - Load given security module on boot ?
 131  * @module: the name of the module
 132  *
 133  * Each LSM must pass this method before registering its own operations
 134  * to avoid security registration races. This method may also be used
 135  * to check if your LSM is currently loaded during kernel initialization.
 136  *
 137  * Returns:
 138  *
 139  * true if:
 140  *
 141  * - The passed LSM is the one chosen by user at boot time,
 142  * - or the passed LSM is configured as the default and the user did not
 143  *   choose an alternate LSM at boot time.
 144  *
 145  * Otherwise, return false.
 146  */
 147 int __init security_module_enable(const char *module)
 148 {
 149         return !strcmp(module, chosen_lsm);
 150 }
 151
 152 /**
 153  * security_add_hooks - Add a modules hooks to the hook lists.
 154  * @hooks: the hooks to add
 155  * @count: the number of hooks to add
 156  * @lsm: the name of the security module
 157  *
 158  * Each LSM has to register its hooks with the infrastructure.
 159  */
 160 void __init security_add_hooks(struct security_hook_list *hooks, int count,
 161                                 char *lsm)
 162 {
 163         int i;
 164
 165         for (i = 0; i < count; i++) {
 166                 hooks[i].lsm = lsm;
 167                 list_add_tail_rcu(&hooks[i].list, hooks[i].head);
 168         }
 169         if (lsm_append(lsm, &lsm_names) < 0)
 170                 panic("%s - Cannot get early memory.\n", __func__);
 171 }
 172
 173 int call_lsm_notifier(enum lsm_event event, void *data)
 174 {
 175         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
 176 }
 177 EXPORT_SYMBOL(call_lsm_notifier);
 178
 179 int register_lsm_notifier(struct notifier_block *nb)
 180 {
 181         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
 182 }
 183 EXPORT_SYMBOL(register_lsm_notifier);
 184
 185 int unregister_lsm_notifier(struct notifier_block *nb)
 186 {
 187         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
 188 }
 189 EXPORT_SYMBOL(unregister_lsm_notifier);
 190
 191 /*
 192  * Hook list operation macros.
 193  *
 194  * call_void_hook:
 195  *      This is a hook that does not return a value.
 196  *
 197  * call_int_hook:
 198  *      This is a hook that returns a value.
 199  */
 200
 201 #define call_void_hook(FUNC, ...)                               \
 202         do {                                                    \
 203                 struct security_hook_list *P;                   \
 204                                                                 \
 205                 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
 206                         P->hook.FUNC(__VA_ARGS__);              \
 207         } while (0)
 208
 209 #define call_int_hook(FUNC, IRC, ...) ({                        \
 210         int RC = IRC;                                           \
 211         do {                                                    \
 212                 struct security_hook_list *P;                   \
 213                                                                 \
 214                 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
 215                         RC = P->hook.FUNC(__VA_ARGS__);         \
 216                         if (RC != 0)                            \
 217                                 break;                          \
 218                 }                                               \
 219         } while (0);                                            \
 220         RC;                                                     \
 221 })
 222
 223 /* Security operations */
 224
 225 int security_binder_set_context_mgr(const struct cred *mgr)
 226 {
 227         return call_int_hook(binder_set_context_mgr, 0, mgr);
 228 }
 229
 230 int security_binder_transaction(const struct cred *from,
 231                                 const struct cred *to)
 232 {
 233         return call_int_hook(binder_transaction, 0, from, to);
 234 }
 235
 236 int security_binder_transfer_binder(const struct cred *from,
 237                                     const struct cred *to)
 238 {
 239         return call_int_hook(binder_transfer_binder, 0, from, to);
 240 }
 241
 242 int security_binder_transfer_file(const struct cred *from,
 243                                   const struct cred *to, struct file *file)
 244 {
 245         return call_int_hook(binder_transfer_file, 0, from, to, file);
 246 }
 247
 248 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 249 {
 250         return call_int_hook(ptrace_access_check, 0, child, mode);
 251 }
 252
 253 int security_ptrace_traceme(struct task_struct *parent)
 254 {
 255         return call_int_hook(ptrace_traceme, 0, parent);
 256 }
 257
 258 int security_capget(struct task_struct *target,
 259                      kernel_cap_t *effective,
 260                      kernel_cap_t *inheritable,
 261                      kernel_cap_t *permitted)
 262 {
 263         return call_int_hook(capget, 0, target,
 264                                 effective, inheritable, permitted);
 265 }
 266
 267 int security_capset(struct cred *new, const struct cred *old,
 268                     const kernel_cap_t *effective,
 269                     const kernel_cap_t *inheritable,
 270                     const kernel_cap_t *permitted)
 271 {
 272         return call_int_hook(capset, 0, new, old,
 273                                 effective, inheritable, permitted);
 274 }
 275
 276 int security_capable(const struct cred *cred, struct user_namespace *ns,
 277                      int cap)
 278 {
 279         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
 280 }
 281
 282 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 283                              int cap)
 284 {
 285         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
 286 }
 287
 288 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 289 {
 290         return call_int_hook(quotactl, 0, cmds, type, id, sb);
 291 }
 292
 293 int security_quota_on(struct dentry *dentry)
 294 {
 295         return call_int_hook(quota_on, 0, dentry);
 296 }
 297
 298 int security_syslog(int type)
 299 {
 300         return call_int_hook(syslog, 0, type);
 301 }
 302
 303 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
 304 {
 305         return call_int_hook(settime, 0, ts, tz);
 306 }
 307
 308 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 309 {
 310         struct security_hook_list *hp;
 311         int cap_sys_admin = 1;
 312         int rc;
 313
 314         /*
 315          * The module will respond with a positive value if
 316          * it thinks the __vm_enough_memory() call should be
 317          * made with the cap_sys_admin set. If all of the modules
 318          * agree that it should be set it will. If any module
 319          * thinks it should not be set it won't.
 320          */
 321         list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
 322                 rc = hp->hook.vm_enough_memory(mm, pages);
 323                 if (rc <= 0) {
 324                         cap_sys_admin = 0;
 325                         break;
 326                 }
 327         }
 328         return __vm_enough_memory(mm, pages, cap_sys_admin);
 329 }
 330
 331 int security_bprm_set_creds(struct linux_binprm *bprm)
 332 {
 333         return call_int_hook(bprm_set_creds, 0, bprm);
 334 }
 335
 336 int security_bprm_check(struct linux_binprm *bprm)
 337 {
 338         int ret;
 339
 340         ret = call_int_hook(bprm_check_security, 0, bprm);
 341         if (ret)
 342                 return ret;
 343         return ima_bprm_check(bprm);
 344 }
 345
 346 void security_bprm_committing_creds(struct linux_binprm *bprm)
 347 {
 348         call_void_hook(bprm_committing_creds, bprm);
 349 }
 350
 351 void security_bprm_committed_creds(struct linux_binprm *bprm)
 352 {
 353         call_void_hook(bprm_committed_creds, bprm);
 354 }
 355
 356 int security_sb_alloc(struct super_block *sb)
 357 {
 358         return call_int_hook(sb_alloc_security, 0, sb);
 359 }
 360
 361 void security_sb_free(struct super_block *sb)
 362 {
 363         call_void_hook(sb_free_security, sb);
 364 }
 365
 366 int security_sb_copy_data(char *orig, char *copy)
 367 {
 368         return call_int_hook(sb_copy_data, 0, orig, copy);
 369 }
 370 EXPORT_SYMBOL(security_sb_copy_data);
 371
 372 int security_sb_remount(struct super_block *sb, void *data)
 373 {
 374         return call_int_hook(sb_remount, 0, sb, data);
 375 }
 376
 377 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 378 {
 379         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
 380 }
 381
 382 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 383 {
 384         return call_int_hook(sb_show_options, 0, m, sb);
 385 }
 386
 387 int security_sb_statfs(struct dentry *dentry)
 388 {
 389         return call_int_hook(sb_statfs, 0, dentry);
 390 }
 391
 392 int security_sb_mount(const char *dev_name, const struct path *path,
 393                        const char *type, unsigned long flags, void *data)
 394 {
 395         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
 396 }
 397
 398 int security_sb_umount(struct vfsmount *mnt, int flags)
 399 {
 400         return call_int_hook(sb_umount, 0, mnt, flags);
 401 }
 402
 403 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
 404 {
 405         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
 406 }
 407
 408 int security_sb_set_mnt_opts(struct super_block *sb,
 409                                 struct security_mnt_opts *opts,
 410                                 unsigned long kern_flags,
 411                                 unsigned long *set_kern_flags)
 412 {
 413         return call_int_hook(sb_set_mnt_opts,
 414                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
 415                                 opts, kern_flags, set_kern_flags);
 416 }
 417 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 418
 419 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 420                                 struct super_block *newsb,
 421                                 unsigned long kern_flags,
 422                                 unsigned long *set_kern_flags)
 423 {
 424         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
 425                                 kern_flags, set_kern_flags);
 426 }
 427 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 428
 429 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 430 {
 431         return call_int_hook(sb_parse_opts_str, 0, options, opts);
 432 }
 433 EXPORT_SYMBOL(security_sb_parse_opts_str);
 434
 435 int security_inode_alloc(struct inode *inode)
 436 {
 437         inode->i_security = NULL;
 438         return call_int_hook(inode_alloc_security, 0, inode);
 439 }
 440
 441 void security_inode_free(struct inode *inode)
 442 {
 443         integrity_inode_free(inode);
 444         call_void_hook(inode_free_security, inode);
 445 }
 446
 447 int security_dentry_init_security(struct dentry *dentry, int mode,
 448                                         const struct qstr *name, void **ctx,
 449                                         u32 *ctxlen)
 450 {
 451         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
 452                                 name, ctx, ctxlen);
 453 }
 454 EXPORT_SYMBOL(security_dentry_init_security);
 455
 456 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 457                                     struct qstr *name,
 458                                     const struct cred *old, struct cred *new)
 459 {
 460         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
 461                                 name, old, new);
 462 }
 463 EXPORT_SYMBOL(security_dentry_create_files_as);
 464
 465 int security_inode_init_security(struct inode *inode, struct inode *dir,
 466                                  const struct qstr *qstr,
 467                                  const initxattrs initxattrs, void *fs_data)
 468 {
 469         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 470         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 471         int ret;
 472
 473         if (unlikely(IS_PRIVATE(inode)))
 474                 return 0;
 475
 476         if (!initxattrs)
 477                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
 478                                      dir, qstr, NULL, NULL, NULL);
 479         memset(new_xattrs, 0, sizeof(new_xattrs));
 480         lsm_xattr = new_xattrs;
 481         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
 482                                                 &lsm_xattr->name,
 483                                                 &lsm_xattr->value,
 484                                                 &lsm_xattr->value_len);
 485         if (ret)
 486                 goto out;
 487
 488         evm_xattr = lsm_xattr + 1;
 489         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 490         if (ret)
 491                 goto out;
 492         ret = initxattrs(inode, new_xattrs, fs_data);
 493 out:
 494         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 495                 kfree(xattr->value);
 496         return (ret == -EOPNOTSUPP) ? 0 : ret;
 497 }
 498 EXPORT_SYMBOL(security_inode_init_security);
 499
 500 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 501                                      const struct qstr *qstr, const char **name,
 502                                      void **value, size_t *len)
 503 {
 504         if (unlikely(IS_PRIVATE(inode)))
 505                 return -EOPNOTSUPP;
 506         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
 507                              qstr, name, value, len);
 508 }
 509 EXPORT_SYMBOL(security_old_inode_init_security);
 510
 511 #ifdef CONFIG_SECURITY_PATH
 512 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
 513                         unsigned int dev)
 514 {
 515         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 516                 return 0;
 517         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
 518 }
 519 EXPORT_SYMBOL(security_path_mknod);
 520
 521 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
 522 {
 523         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 524                 return 0;
 525         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
 526 }
 527 EXPORT_SYMBOL(security_path_mkdir);
 528
 529 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
 530 {
 531         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 532                 return 0;
 533         return call_int_hook(path_rmdir, 0, dir, dentry);
 534 }
 535
 536 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 537 {
 538         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 539                 return 0;
 540         return call_int_hook(path_unlink, 0, dir, dentry);
 541 }
 542 EXPORT_SYMBOL(security_path_unlink);
 543
 544 int security_path_symlink(const struct path *dir, struct dentry *dentry,
 545                           const char *old_name)
 546 {
 547         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 548                 return 0;
 549         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 550 }
 551
 552 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 553                        struct dentry *new_dentry)
 554 {
 555         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 556                 return 0;
 557         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 558 }
 559
 560 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 561                          const struct path *new_dir, struct dentry *new_dentry,
 562                          unsigned int flags)
 563 {
 564         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 565                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 566                 return 0;
 567
 568         if (flags & RENAME_EXCHANGE) {
 569                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
 570                                         old_dir, old_dentry);
 571                 if (err)
 572                         return err;
 573         }
 574
 575         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
 576                                 new_dentry);
 577 }
 578 EXPORT_SYMBOL(security_path_rename);
 579
 580 int security_path_truncate(const struct path *path)
 581 {
 582         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 583                 return 0;
 584         return call_int_hook(path_truncate, 0, path);
 585 }
 586
 587 int security_path_chmod(const struct path *path, umode_t mode)
 588 {
 589         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 590                 return 0;
 591         return call_int_hook(path_chmod, 0, path, mode);
 592 }
 593
 594 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 595 {
 596         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 597                 return 0;
 598         return call_int_hook(path_chown, 0, path, uid, gid);
 599 }
 600
 601 int security_path_chroot(const struct path *path)
 602 {
 603         return call_int_hook(path_chroot, 0, path);
 604 }
 605 #endif
 606
 607 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 608 {
 609         if (unlikely(IS_PRIVATE(dir)))
 610                 return 0;
 611         return call_int_hook(inode_create, 0, dir, dentry, mode);
 612 }
 613 EXPORT_SYMBOL_GPL(security_inode_create);
 614
 615 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 616                          struct dentry *new_dentry)
 617 {
 618         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 619                 return 0;
 620         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
 621 }
 622
 623 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 624 {
 625         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 626                 return 0;
 627         return call_int_hook(inode_unlink, 0, dir, dentry);
 628 }
 629
 630 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 631                             const char *old_name)
 632 {
 633         if (unlikely(IS_PRIVATE(dir)))
 634                 return 0;
 635         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
 636 }
 637
 638 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 639 {
 640         if (unlikely(IS_PRIVATE(dir)))
 641                 return 0;
 642         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
 643 }
 644 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 645
 646 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 647 {
 648         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 649                 return 0;
 650         return call_int_hook(inode_rmdir, 0, dir, dentry);
 651 }
 652
 653 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 654 {
 655         if (unlikely(IS_PRIVATE(dir)))
 656                 return 0;
 657         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
 658 }
 659
 660 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 661                            struct inode *new_dir, struct dentry *new_dentry,
 662                            unsigned int flags)
 663 {
 664         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 665             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 666                 return 0;
 667
 668         if (flags & RENAME_EXCHANGE) {
 669                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
 670                                                      old_dir, old_dentry);
 671                 if (err)
 672                         return err;
 673         }
 674
 675         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
 676                                            new_dir, new_dentry);
 677 }
 678
 679 int security_inode_readlink(struct dentry *dentry)
 680 {
 681         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 682                 return 0;
 683         return call_int_hook(inode_readlink, 0, dentry);
 684 }
 685
 686 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 687                                bool rcu)
 688 {
 689         if (unlikely(IS_PRIVATE(inode)))
 690                 return 0;
 691         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
 692 }
 693
 694 int security_inode_permission(struct inode *inode, int mask)
 695 {
 696         if (unlikely(IS_PRIVATE(inode)))
 697                 return 0;
 698         return call_int_hook(inode_permission, 0, inode, mask);
 699 }
 700
 701 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 702 {
 703         int ret;
 704
 705         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 706                 return 0;
 707         ret = call_int_hook(inode_setattr, 0, dentry, attr);
 708         if (ret)
 709                 return ret;
 710         return evm_inode_setattr(dentry, attr);
 711 }
 712 EXPORT_SYMBOL_GPL(security_inode_setattr);
 713
 714 int security_inode_getattr(const struct path *path)
 715 {
 716         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 717                 return 0;
 718         return call_int_hook(inode_getattr, 0, path);
 719 }
 720
 721 int security_inode_setxattr(struct dentry *dentry, const char *name,
 722                             const void *value, size_t size, int flags)
 723 {
 724         int ret;
 725
 726         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 727                 return 0;
 728         /*
 729          * SELinux and Smack integrate the cap call,
 730          * so assume that all LSMs supplying this call do so.
 731          */
 732         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
 733                                 flags);
 734
 735         if (ret == 1)
 736                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
 737         if (ret)
 738                 return ret;
 739         ret = ima_inode_setxattr(dentry, name, value, size);
 740         if (ret)
 741                 return ret;
 742         return evm_inode_setxattr(dentry, name, value, size);
 743 }
 744
 745 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 746                                   const void *value, size_t size, int flags)
 747 {
 748         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 749                 return;
 750         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
 751         evm_inode_post_setxattr(dentry, name, value, size);
 752 }
 753
 754 int security_inode_getxattr(struct dentry *dentry, const char *name)
 755 {
 756         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 757                 return 0;
 758         return call_int_hook(inode_getxattr, 0, dentry, name);
 759 }
 760
 761 int security_inode_listxattr(struct dentry *dentry)
 762 {
 763         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 764                 return 0;
 765         return call_int_hook(inode_listxattr, 0, dentry);
 766 }
 767
 768 int security_inode_removexattr(struct dentry *dentry, const char *name)
 769 {
 770         int ret;
 771
 772         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 773                 return 0;
 774         /*
 775          * SELinux and Smack integrate the cap call,
 776          * so assume that all LSMs supplying this call do so.
 777          */
 778         ret = call_int_hook(inode_removexattr, 1, dentry, name);
 779         if (ret == 1)
 780                 ret = cap_inode_removexattr(dentry, name);
 781         if (ret)
 782                 return ret;
 783         ret = ima_inode_removexattr(dentry, name);
 784         if (ret)
 785                 return ret;
 786         return evm_inode_removexattr(dentry, name);
 787 }
 788
 789 int security_inode_need_killpriv(struct dentry *dentry)
 790 {
 791         return call_int_hook(inode_need_killpriv, 0, dentry);
 792 }
 793
 794 int security_inode_killpriv(struct dentry *dentry)
 795 {
 796         return call_int_hook(inode_killpriv, 0, dentry);
 797 }
 798
 799 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 800 {
 801         struct security_hook_list *hp;
 802         int rc;
 803
 804         if (unlikely(IS_PRIVATE(inode)))
 805                 return -EOPNOTSUPP;
 806         /*
 807          * Only one module will provide an attribute with a given name.
 808          */
 809         list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
 810                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
 811                 if (rc != -EOPNOTSUPP)
 812                         return rc;
 813         }
 814         return -EOPNOTSUPP;
 815 }
 816
 817 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 818 {
 819         struct security_hook_list *hp;
 820         int rc;
 821
 822         if (unlikely(IS_PRIVATE(inode)))
 823                 return -EOPNOTSUPP;
 824         /*
 825          * Only one module will provide an attribute with a given name.
 826          */
 827         list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
 828                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
 829                                                                 flags);
 830                 if (rc != -EOPNOTSUPP)
 831                         return rc;
 832         }
 833         return -EOPNOTSUPP;
 834 }
 835
 836 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 837 {
 838         if (unlikely(IS_PRIVATE(inode)))
 839                 return 0;
 840         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
 841 }
 842 EXPORT_SYMBOL(security_inode_listsecurity);
 843
 844 void security_inode_getsecid(struct inode *inode, u32 *secid)
 845 {
 846         call_void_hook(inode_getsecid, inode, secid);
 847 }
 848
 849 int security_inode_copy_up(struct dentry *src, struct cred **new)
 850 {
 851         return call_int_hook(inode_copy_up, 0, src, new);
 852 }
 853 EXPORT_SYMBOL(security_inode_copy_up);
 854
 855 int security_inode_copy_up_xattr(const char *name)
 856 {
 857         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
 858 }
 859 EXPORT_SYMBOL(security_inode_copy_up_xattr);
 860
 861 int security_file_permission(struct file *file, int mask)
 862 {
 863         int ret;
 864
 865         ret = call_int_hook(file_permission, 0, file, mask);
 866         if (ret)
 867                 return ret;
 868
 869         return fsnotify_perm(file, mask);
 870 }
 871
 872 int security_file_alloc(struct file *file)
 873 {
 874         return call_int_hook(file_alloc_security, 0, file);
 875 }
 876
 877 void security_file_free(struct file *file)
 878 {
 879         call_void_hook(file_free_security, file);
 880 }
 881
 882 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 883 {
 884         return call_int_hook(file_ioctl, 0, file, cmd, arg);
 885 }
 886
 887 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 888 {
 889         /*
 890          * Does we have PROT_READ and does the application expect
 891          * it to imply PROT_EXEC?  If not, nothing to talk about...
 892          */
 893         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 894                 return prot;
 895         if (!(current->personality & READ_IMPLIES_EXEC))
 896                 return prot;
 897         /*
 898          * if that's an anonymous mapping, let it.
 899          */
 900         if (!file)
 901                 return prot | PROT_EXEC;
 902         /*
 903          * ditto if it's not on noexec mount, except that on !MMU we need
 904          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 905          */
 906         if (!path_noexec(&file->f_path)) {
 907 #ifndef CONFIG_MMU
 908                 if (file->f_op->mmap_capabilities) {
 909                         unsigned caps = file->f_op->mmap_capabilities(file);
 910                         if (!(caps & NOMMU_MAP_EXEC))
 911                                 return prot;
 912                 }
 913 #endif
 914                 return prot | PROT_EXEC;
 915         }
 916         /* anything on noexec mount won't get PROT_EXEC */
 917         return prot;
 918 }
 919
 920 int security_mmap_file(struct file *file, unsigned long prot,
 921                         unsigned long flags)
 922 {
 923         int ret;
 924         ret = call_int_hook(mmap_file, 0, file, prot,
 925                                         mmap_prot(file, prot), flags);
 926         if (ret)
 927                 return ret;
 928         return ima_file_mmap(file, prot);
 929 }
 930
 931 int security_mmap_addr(unsigned long addr)
 932 {
 933         return call_int_hook(mmap_addr, 0, addr);
 934 }
 935
 936 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 937                             unsigned long prot)
 938 {
 939         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 940 }
 941
 942 int security_file_lock(struct file *file, unsigned int cmd)
 943 {
 944         return call_int_hook(file_lock, 0, file, cmd);
 945 }
 946
 947 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 948 {
 949         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 950 }
 951
 952 void security_file_set_fowner(struct file *file)
 953 {
 954         call_void_hook(file_set_fowner, file);
 955 }
 956
 957 int security_file_send_sigiotask(struct task_struct *tsk,
 958                                   struct fown_struct *fown, int sig)
 959 {
 960         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 961 }
 962
 963 int security_file_receive(struct file *file)
 964 {
 965         return call_int_hook(file_receive, 0, file);
 966 }
 967
 968 int security_file_open(struct file *file, const struct cred *cred)
 969 {
 970         int ret;
 971
 972         ret = call_int_hook(file_open, 0, file, cred);
 973         if (ret)
 974                 return ret;
 975
 976         return fsnotify_perm(file, MAY_OPEN);
 977 }
 978
 979 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
 980 {
 981         return call_int_hook(task_alloc, 0, task, clone_flags);
 982 }
 983
 984 void security_task_free(struct task_struct *task)
 985 {
 986         call_void_hook(task_free, task);
 987 }
 988
 989 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 990 {
 991         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
 992 }
 993
 994 void security_cred_free(struct cred *cred)
 995 {
 996         /*
 997          * There is a failure case in prepare_creds() that
 998          * may result in a call here with ->security being NULL.
 999          */
1000         if (unlikely(cred->security == NULL))
1001                 return;
1002
1003         call_void_hook(cred_free, cred);
1004 }
1005
1006 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1007 {
1008         return call_int_hook(cred_prepare, 0, new, old, gfp);
1009 }
1010
1011 void security_transfer_creds(struct cred *new, const struct cred *old)
1012 {
1013         call_void_hook(cred_transfer, new, old);
1014 }
1015
1016 int security_kernel_act_as(struct cred *new, u32 secid)
1017 {
1018         return call_int_hook(kernel_act_as, 0, new, secid);
1019 }
1020
1021 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1022 {
1023         return call_int_hook(kernel_create_files_as, 0, new, inode);
1024 }
1025
1026 int security_kernel_module_request(char *kmod_name)
1027 {
1028         return call_int_hook(kernel_module_request, 0, kmod_name);
1029 }
1030
1031 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1032 {
1033         int ret;
1034
1035         ret = call_int_hook(kernel_read_file, 0, file, id);
1036         if (ret)
1037                 return ret;
1038         return ima_read_file(file, id);
1039 }
1040 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1041
1042 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1043                                    enum kernel_read_file_id id)
1044 {
1045         int ret;
1046
1047         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1048         if (ret)
1049                 return ret;
1050         return ima_post_read_file(file, buf, size, id);
1051 }
1052 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1053
1054 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1055                              int flags)
1056 {
1057         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1058 }
1059
1060 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1061 {
1062         return call_int_hook(task_setpgid, 0, p, pgid);
1063 }
1064
1065 int security_task_getpgid(struct task_struct *p)
1066 {
1067         return call_int_hook(task_getpgid, 0, p);
1068 }
1069
1070 int security_task_getsid(struct task_struct *p)
1071 {
1072         return call_int_hook(task_getsid, 0, p);
1073 }
1074
1075 void security_task_getsecid(struct task_struct *p, u32 *secid)
1076 {
1077         *secid = 0;
1078         call_void_hook(task_getsecid, p, secid);
1079 }
1080 EXPORT_SYMBOL(security_task_getsecid);
1081
1082 int security_task_setnice(struct task_struct *p, int nice)
1083 {
1084         return call_int_hook(task_setnice, 0, p, nice);
1085 }
1086
1087 int security_task_setioprio(struct task_struct *p, int ioprio)
1088 {
1089         return call_int_hook(task_setioprio, 0, p, ioprio);
1090 }
1091
1092 int security_task_getioprio(struct task_struct *p)
1093 {
1094         return call_int_hook(task_getioprio, 0, p);
1095 }
1096
1097 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1098                           unsigned int flags)
1099 {
1100         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1101 }
1102
1103 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1104                 struct rlimit *new_rlim)
1105 {
1106         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1107 }
1108
1109 int security_task_setscheduler(struct task_struct *p)
1110 {
1111         return call_int_hook(task_setscheduler, 0, p);
1112 }
1113
1114 int security_task_getscheduler(struct task_struct *p)
1115 {
1116         return call_int_hook(task_getscheduler, 0, p);
1117 }
1118
1119 int security_task_movememory(struct task_struct *p)
1120 {
1121         return call_int_hook(task_movememory, 0, p);
1122 }
1123
1124 int security_task_kill(struct task_struct *p, struct siginfo *info,
1125                         int sig, u32 secid)
1126 {
1127         return call_int_hook(task_kill, 0, p, info, sig, secid);
1128 }
1129
1130 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1131                          unsigned long arg4, unsigned long arg5)
1132 {
1133         int thisrc;
1134         int rc = -ENOSYS;
1135         struct security_hook_list *hp;
1136
1137         list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1138                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1139                 if (thisrc != -ENOSYS) {
1140                         rc = thisrc;
1141                         if (thisrc != 0)
1142                                 break;
1143                 }
1144         }
1145         return rc;
1146 }
1147
1148 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1149 {
1150         call_void_hook(task_to_inode, p, inode);
1151 }
1152
1153 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1154 {
1155         return call_int_hook(ipc_permission, 0, ipcp, flag);
1156 }
1157
1158 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1159 {
1160         *secid = 0;
1161         call_void_hook(ipc_getsecid, ipcp, secid);
1162 }
1163
1164 int security_msg_msg_alloc(struct msg_msg *msg)
1165 {
1166         return call_int_hook(msg_msg_alloc_security, 0, msg);
1167 }
1168
1169 void security_msg_msg_free(struct msg_msg *msg)
1170 {
1171         call_void_hook(msg_msg_free_security, msg);
1172 }
1173
1174 int security_msg_queue_alloc(struct msg_queue *msq)
1175 {
1176         return call_int_hook(msg_queue_alloc_security, 0, msq);
1177 }
1178
1179 void security_msg_queue_free(struct msg_queue *msq)
1180 {
1181         call_void_hook(msg_queue_free_security, msq);
1182 }
1183
1184 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1185 {
1186         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1187 }
1188
1189 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1190 {
1191         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1192 }
1193
1194 int security_msg_queue_msgsnd(struct msg_queue *msq,
1195                                struct msg_msg *msg, int msqflg)
1196 {
1197         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1198 }
1199
1200 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1201                                struct task_struct *target, long type, int mode)
1202 {
1203         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1204 }
1205
1206 int security_shm_alloc(struct shmid_kernel *shp)
1207 {
1208         return call_int_hook(shm_alloc_security, 0, shp);
1209 }
1210
1211 void security_shm_free(struct shmid_kernel *shp)
1212 {
1213         call_void_hook(shm_free_security, shp);
1214 }
1215
1216 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1217 {
1218         return call_int_hook(shm_associate, 0, shp, shmflg);
1219 }
1220
1221 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1222 {
1223         return call_int_hook(shm_shmctl, 0, shp, cmd);
1224 }
1225
1226 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1227 {
1228         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1229 }
1230
1231 int security_sem_alloc(struct sem_array *sma)
1232 {
1233         return call_int_hook(sem_alloc_security, 0, sma);
1234 }
1235
1236 void security_sem_free(struct sem_array *sma)
1237 {
1238         call_void_hook(sem_free_security, sma);
1239 }
1240
1241 int security_sem_associate(struct sem_array *sma, int semflg)
1242 {
1243         return call_int_hook(sem_associate, 0, sma, semflg);
1244 }
1245
1246 int security_sem_semctl(struct sem_array *sma, int cmd)
1247 {
1248         return call_int_hook(sem_semctl, 0, sma, cmd);
1249 }
1250
1251 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1252                         unsigned nsops, int alter)
1253 {
1254         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1255 }
1256
1257 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1258 {
1259         if (unlikely(inode && IS_PRIVATE(inode)))
1260                 return;
1261         call_void_hook(d_instantiate, dentry, inode);
1262 }
1263 EXPORT_SYMBOL(security_d_instantiate);
1264
1265 int security_getprocattr(struct task_struct *p, char *name, char **value)
1266 {
1267         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1268 }
1269
1270 int security_setprocattr(const char *name, void *value, size_t size)
1271 {
1272         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1273 }
1274
1275 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1276 {
1277         return call_int_hook(netlink_send, 0, sk, skb);
1278 }
1279
1280 int security_ismaclabel(const char *name)
1281 {
1282         return call_int_hook(ismaclabel, 0, name);
1283 }
1284 EXPORT_SYMBOL(security_ismaclabel);
1285
1286 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1287 {
1288         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1289                                 seclen);
1290 }
1291 EXPORT_SYMBOL(security_secid_to_secctx);
1292
1293 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1294 {
1295         *secid = 0;
1296         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1297 }
1298 EXPORT_SYMBOL(security_secctx_to_secid);
1299
1300 void security_release_secctx(char *secdata, u32 seclen)
1301 {
1302         call_void_hook(release_secctx, secdata, seclen);
1303 }
1304 EXPORT_SYMBOL(security_release_secctx);
1305
1306 void security_inode_invalidate_secctx(struct inode *inode)
1307 {
1308         call_void_hook(inode_invalidate_secctx, inode);
1309 }
1310 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1311
1312 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1313 {
1314         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1315 }
1316 EXPORT_SYMBOL(security_inode_notifysecctx);
1317
1318 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1319 {
1320         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1321 }
1322 EXPORT_SYMBOL(security_inode_setsecctx);
1323
1324 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1325 {
1326         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1327 }
1328 EXPORT_SYMBOL(security_inode_getsecctx);
1329
1330 #ifdef CONFIG_SECURITY_NETWORK
1331
1332 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1333 {
1334         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1335 }
1336 EXPORT_SYMBOL(security_unix_stream_connect);
1337
1338 int security_unix_may_send(struct socket *sock,  struct socket *other)
1339 {
1340         return call_int_hook(unix_may_send, 0, sock, other);
1341 }
1342 EXPORT_SYMBOL(security_unix_may_send);
1343
1344 int security_socket_create(int family, int type, int protocol, int kern)
1345 {
1346         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1347 }
1348
1349 int security_socket_post_create(struct socket *sock, int family,
1350                                 int type, int protocol, int kern)
1351 {
1352         return call_int_hook(socket_post_create, 0, sock, family, type,
1353                                                 protocol, kern);
1354 }
1355
1356 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1357 {
1358         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1359 }
1360
1361 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1362 {
1363         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1364 }
1365
1366 int security_socket_listen(struct socket *sock, int backlog)
1367 {
1368         return call_int_hook(socket_listen, 0, sock, backlog);
1369 }
1370
1371 int security_socket_accept(struct socket *sock, struct socket *newsock)
1372 {
1373         return call_int_hook(socket_accept, 0, sock, newsock);
1374 }
1375
1376 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1377 {
1378         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1379 }
1380
1381 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1382                             int size, int flags)
1383 {
1384         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1385 }
1386
1387 int security_socket_getsockname(struct socket *sock)
1388 {
1389         return call_int_hook(socket_getsockname, 0, sock);
1390 }
1391
1392 int security_socket_getpeername(struct socket *sock)
1393 {
1394         return call_int_hook(socket_getpeername, 0, sock);
1395 }
1396
1397 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1398 {
1399         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1400 }
1401
1402 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1403 {
1404         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1405 }
1406
1407 int security_socket_shutdown(struct socket *sock, int how)
1408 {
1409         return call_int_hook(socket_shutdown, 0, sock, how);
1410 }
1411
1412 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1413 {
1414         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1415 }
1416 EXPORT_SYMBOL(security_sock_rcv_skb);
1417
1418 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1419                                       int __user *optlen, unsigned len)
1420 {
1421         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1422                                 optval, optlen, len);
1423 }
1424
1425 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1426 {
1427         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1428                              skb, secid);
1429 }
1430 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1431
1432 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1433 {
1434         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1435 }
1436
1437 void security_sk_free(struct sock *sk)
1438 {
1439         call_void_hook(sk_free_security, sk);
1440 }
1441
1442 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1443 {
1444         call_void_hook(sk_clone_security, sk, newsk);
1445 }
1446 EXPORT_SYMBOL(security_sk_clone);
1447
1448 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1449 {
1450         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1451 }
1452 EXPORT_SYMBOL(security_sk_classify_flow);
1453
1454 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1455 {
1456         call_void_hook(req_classify_flow, req, fl);
1457 }
1458 EXPORT_SYMBOL(security_req_classify_flow);
1459
1460 void security_sock_graft(struct sock *sk, struct socket *parent)
1461 {
1462         call_void_hook(sock_graft, sk, parent);
1463 }
1464 EXPORT_SYMBOL(security_sock_graft);
1465
1466 int security_inet_conn_request(struct sock *sk,
1467                         struct sk_buff *skb, struct request_sock *req)
1468 {
1469         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1470 }
1471 EXPORT_SYMBOL(security_inet_conn_request);
1472
1473 void security_inet_csk_clone(struct sock *newsk,
1474                         const struct request_sock *req)
1475 {
1476         call_void_hook(inet_csk_clone, newsk, req);
1477 }
1478
1479 void security_inet_conn_established(struct sock *sk,
1480                         struct sk_buff *skb)
1481 {
1482         call_void_hook(inet_conn_established, sk, skb);
1483 }
1484
1485 int security_secmark_relabel_packet(u32 secid)
1486 {
1487         return call_int_hook(secmark_relabel_packet, 0, secid);
1488 }
1489 EXPORT_SYMBOL(security_secmark_relabel_packet);
1490
1491 void security_secmark_refcount_inc(void)
1492 {
1493         call_void_hook(secmark_refcount_inc);
1494 }
1495 EXPORT_SYMBOL(security_secmark_refcount_inc);
1496
1497 void security_secmark_refcount_dec(void)
1498 {
1499         call_void_hook(secmark_refcount_dec);
1500 }
1501 EXPORT_SYMBOL(security_secmark_refcount_dec);
1502
1503 int security_tun_dev_alloc_security(void **security)
1504 {
1505         return call_int_hook(tun_dev_alloc_security, 0, security);
1506 }
1507 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1508
1509 void security_tun_dev_free_security(void *security)
1510 {
1511         call_void_hook(tun_dev_free_security, security);
1512 }
1513 EXPORT_SYMBOL(security_tun_dev_free_security);
1514
1515 int security_tun_dev_create(void)
1516 {
1517         return call_int_hook(tun_dev_create, 0);
1518 }
1519 EXPORT_SYMBOL(security_tun_dev_create);
1520
1521 int security_tun_dev_attach_queue(void *security)
1522 {
1523         return call_int_hook(tun_dev_attach_queue, 0, security);
1524 }
1525 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1526
1527 int security_tun_dev_attach(struct sock *sk, void *security)
1528 {
1529         return call_int_hook(tun_dev_attach, 0, sk, security);
1530 }
1531 EXPORT_SYMBOL(security_tun_dev_attach);
1532
1533 int security_tun_dev_open(void *security)
1534 {
1535         return call_int_hook(tun_dev_open, 0, security);
1536 }
1537 EXPORT_SYMBOL(security_tun_dev_open);
1538
1539 #endif  /* CONFIG_SECURITY_NETWORK */
1540
1541 #ifdef CONFIG_SECURITY_INFINIBAND
1542
1543 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1544 {
1545         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1546 }
1547 EXPORT_SYMBOL(security_ib_pkey_access);
1548
1549 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1550 {
1551         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1552 }
1553 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1554
1555 int security_ib_alloc_security(void **sec)
1556 {
1557         return call_int_hook(ib_alloc_security, 0, sec);
1558 }
1559 EXPORT_SYMBOL(security_ib_alloc_security);
1560
1561 void security_ib_free_security(void *sec)
1562 {
1563         call_void_hook(ib_free_security, sec);
1564 }
1565 EXPORT_SYMBOL(security_ib_free_security);
1566 #endif  /* CONFIG_SECURITY_INFINIBAND */
1567
1568 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1569
1570 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1571                                struct xfrm_user_sec_ctx *sec_ctx,
1572                                gfp_t gfp)
1573 {
1574         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1575 }
1576 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1577
1578 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1579                               struct xfrm_sec_ctx **new_ctxp)
1580 {
1581         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1582 }
1583
1584 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1585 {
1586         call_void_hook(xfrm_policy_free_security, ctx);
1587 }
1588 EXPORT_SYMBOL(security_xfrm_policy_free);
1589
1590 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1591 {
1592         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1593 }
1594
1595 int security_xfrm_state_alloc(struct xfrm_state *x,
1596                               struct xfrm_user_sec_ctx *sec_ctx)
1597 {
1598         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1599 }
1600 EXPORT_SYMBOL(security_xfrm_state_alloc);
1601
1602 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1603                                       struct xfrm_sec_ctx *polsec, u32 secid)
1604 {
1605         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1606 }
1607
1608 int security_xfrm_state_delete(struct xfrm_state *x)
1609 {
1610         return call_int_hook(xfrm_state_delete_security, 0, x);
1611 }
1612 EXPORT_SYMBOL(security_xfrm_state_delete);
1613
1614 void security_xfrm_state_free(struct xfrm_state *x)
1615 {
1616         call_void_hook(xfrm_state_free_security, x);
1617 }
1618
1619 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1620 {
1621         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1622 }
1623
1624 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1625                                        struct xfrm_policy *xp,
1626                                        const struct flowi *fl)
1627 {
1628         struct security_hook_list *hp;
1629         int rc = 1;
1630
1631         /*
1632          * Since this function is expected to return 0 or 1, the judgment
1633          * becomes difficult if multiple LSMs supply this call. Fortunately,
1634          * we can use the first LSM's judgment because currently only SELinux
1635          * supplies this call.
1636          *
1637          * For speed optimization, we explicitly break the loop rather than
1638          * using the macro
1639          */
1640         list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1641                                 list) {
1642                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1643                 break;
1644         }
1645         return rc;
1646 }
1647
1648 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1649 {
1650         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1651 }
1652
1653 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1654 {
1655         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1656                                 0);
1657
1658         BUG_ON(rc);
1659 }
1660 EXPORT_SYMBOL(security_skb_classify_flow);
1661
1662 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1663
1664 #ifdef CONFIG_KEYS
1665
1666 int security_key_alloc(struct key *key, const struct cred *cred,
1667                        unsigned long flags)
1668 {
1669         return call_int_hook(key_alloc, 0, key, cred, flags);
1670 }
1671
1672 void security_key_free(struct key *key)
1673 {
1674         call_void_hook(key_free, key);
1675 }
1676
1677 int security_key_permission(key_ref_t key_ref,
1678                             const struct cred *cred, unsigned perm)
1679 {
1680         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1681 }
1682
1683 int security_key_getsecurity(struct key *key, char **_buffer)
1684 {
1685         *_buffer = NULL;
1686         return call_int_hook(key_getsecurity, 0, key, _buffer);
1687 }
1688
1689 #endif  /* CONFIG_KEYS */
1690
1691 #ifdef CONFIG_AUDIT
1692
1693 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1694 {
1695         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1696 }
1697
1698 int security_audit_rule_known(struct audit_krule *krule)
1699 {
1700         return call_int_hook(audit_rule_known, 0, krule);
1701 }
1702
1703 void security_audit_rule_free(void *lsmrule)
1704 {
1705         call_void_hook(audit_rule_free, lsmrule);
1706 }
1707
1708 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1709                               struct audit_context *actx)
1710 {
1711         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1712                                 actx);
1713 }
1714 #endif /* CONFIG_AUDIT */